Vacuum-pan.



A. GARTLEY.

VACUUM PAN.

APPLICATION FILED NOV. 17, 1910.

1,005,533, Patented Oct. 10,1911.

or other solutions by usually accomplished UNITED; STATES PATENT ormon.

ALONZO GARTLEY, OF HONOLULU, TERRITORY OF HAWAII.

VACUUM-PAM Loos .533

Specification of Letters Patent. Application filed November 1'2,vEloy-Serial No.

Patented Oct. 10,1911.

i To alltnho'm it may concern:

lmown that I, ALoNzo GARTLEY, ,a of the United.- States, residing at Be.it citizen Honolulu, in the county of Honolulu, .Ter.

rito ryof Hawaii, have invented certain new and useful .I provements inVacuum-Pans; and '1 do here y declare the following to be a run, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertainsto make and use the same.

This invention relates to vacuum-pans,

and has; for its object greater economy'in steammonsumption, a resultinghigher more rapid boiling and efliciency in operation.

In vacuumpans-for concentrating sugar boiling, the heating is by steamin helical or spiral copper coils inside the pan, the steam beingadmitted to the means the object being to separate the steam in steamconsumption.

and vapor from the condensed Water in the drains (or tail pipes) and toreturn the former .to the heating coils, and at the same time to reducethe pressure in said drains. By this arrangement a better circulation isefiected in the coils, boiling in the pan and a greater economy A pumpmay be employed in lieu of an injector.

While the invention is'particularly applicable to vacuum-pans, it may beemployed in connection with other heating coils, for example such as areused in defecating tanks, etc.

In the accompan 'ing drawing forming a part of this speci cation, Figure1 represents a vertical section through the lower portion of avacuum-pan embodying a preferred form of my-invention. Fig. 2 shows inelevation a modification.

Referring to the drawing, 1 is the belt of thevacuum-pan, 2 is thebottom, and 3 is the lower coil. An injector 4 is connected to the inletnozzle 5 of the coil 3 and to the -coil 3.

causing more rapid steam line by of the coil 3v is connected to theseparator 8. The pipe 9. connects the separator 8. with connected by thepipe 11, to the lower por tion of the separator 8. Air may be blownpet-cock 12 on the top I out by opening the of the separator 8.

thepipe 6. The tail, pipe 7 v the suction of the 'injector 4.. A- trap10 is In operation, steam is admitted to the coil 3 from the pipe ,6th'rough'the injector 4, I and the steam orjapor in the separator 8- isdrawn through'the pipe 9 by the injector 4t and enters the coil 3. Acirculation of steam is thus maintained in the coil 3, the condensedwater being removed from the separator 8 by the trap 10. The boiling ofvthe massecuite or other materialsurrounding the coil is thereby morerapidly accomplished than heretofore. I

In the modification shown in Fig. 2, a

pump 13 is employed in lieu of the injector 4. The pipe 14 connects thesuction of the pump 13 to'the separator 8, and the dis charge firomthepump l3-is connected by the piping 15 to the inlet nozzle 5'01 theSteam is admitted to the pipe 15 from-the steam pipe 6' by the valve 16asrequired to make up theloss due to condemsation.

' I claim: I f

1. In a vacuum-pan ofthe like, a heating coil, an injector for admittingsteam to the upper endfof said coil, a separatorconnected to the lowerend of said coil andalso to,

the suction of the injector, and means for removing water from theseparator.

2. In combination with a heating coil, a system of vapor steam andcondensed water pipes including a drain aseparatOr in the drain fromsaid heating coi1,'and a steam jet exhauster operated with high pressuresteam to produce a reduced pressurein said drain, by exhausting thesteam and vapor in said drain after-separation from the condensed water.

3. In combination with aheating coil, a

system of vapor steam and condensed water- I pipes, a separatorconnected therewith, and an injector for returning to the heating'collthe vapor and steam in the drain of said coil after separation from thecondensed Water.

4. The combination with a heating coil,-

of means to induce a circulation of steam therein, means to separate theoutgoing steam from the water of Condensation, and means to return suchoutgoing steam to the coil.

The combination with a heating coil having an inlet and an outlet, ofmeans associated with the inlet to induce a circulation of steam in thecoil, means associated with the outlet to separate the outgoing steamfrom the Water of. condensation, and means to return to the coil inletthe steam thus separated.

Washington,

6. The combination with a heating coil, of means to supply steam to oneend of the same, a separator connected with the o her end of the coil,and means connecting the 15 H. G. GINAQA, R0131. J. PRA'M',

my signa-

